It took 14 years to complete Hadrian’s Wall, which was built on the orders of Roman emperor Hadrian to protect England from the Scottish tribes.
On average, an American football game lasts for 3 hours and 12 minutes, but the ball is only in play for 11 of those minutes.
The Boeing 747 can transport different amounts of people. The 747-400 version can hold 416 passengers in a typical three-class layout, but up to 660 passengers in a high-density setup with only one class.
Not many athletes make it into the NFL. Out of the 15,588 student athletes playing football, only 256 of those athletes would be drafted into the NFL. Only 0.008% of all high school athletes get drafted.
On March 18, 1965, Soviet cosmonaut Alexei Leonov became the first man to walk in space. The 30-year-old Russian floated outside the Voskhod 2 spacecraft for 12 minutes while connected to a 16ft tether.
The trade winds coming from the south and the north meet near the equator. This convergence produces general upward winds as they are heated so there are no steady surface winds, leaving an area of calm known as the doldrums.
South Africa has the most official languages that have equal status, with eleven. Bolivia recognises thirty-seven languages, the most of any country in the world, and India recognises twenty-three. However, Bolivia and India give primacy to Spanish and Hindi respectively, making South Africa the country with the most equally important official languages.
On average, blondes and brunettes have the most hair. They tend to have an average of 150,000 hairs on their head, whilst the average redhead has only 90,000.
Icebergs are always made out of fresh water. True icebergs are glacier fragments that have fallen into the sea. Glaciers are composed of fresh water, and thus true icebergs are too. Additionally, ‘sea ice’ that forms from frozen sea water is also fresh- this is because the salt is excluded from the ice crystal lattice that develops when water freezes.
At the time of writing, taking your dogs for walks could become the law in Germany. Under the planned rules, dog owners will have to take their dogs for walks at least twice a day, for a minimum of one hour in total.